Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Karen D.J. Hindricks
  • Jessica Erdmann
  • Celine Marten
  • Timo Herrmann
  • Peter Behrens
  • Andreas Schaate
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Details

OriginalspracheEnglisch
Seiten (von - bis)27447-27455
Seitenumfang9
FachzeitschriftRSC Advances
Jahrgang13
Ausgabenummer39
PublikationsstatusVeröffentlicht - 13 Sept. 2023

Abstract

Metal-organic frameworks (MOFs) with benzophenone linker molecules are characterized by their ability to undergo photochemical postsynthetic modification. While this approach opens up almost unlimited possibilities for tailoring materials to specific applications, the processability of the large particles is still lacking. In this work, we present a new approach to fabricate micro flakes of the stable Zr-bzpdc-MOF (bzpdc = benzophenone-4-4′-dicarboxylate) with a thickness of only a few monolayers. The crystalline and nanoporous flakes form dispersions in acetone that are stable for months. Embedding the flakes in polymer composites was investigated as one of many possible applications. Zr-bzpdc-MOF micro flakes were decorated with poly(dimethylsiloxane) (PDMS) via a photochemical postsynthetic modification and incorporated into silicon elastomers. The PDMS functionalization allows covalent cross-linking between the MOF and the polymer while maintaining the porosity of the MOF. The resulting hybrid materials provide defect-free interfaces and show preferential adsorption of CO2 over CH4, making them attractive for gas separation or sensing applications. The work should serve as a basis for bringing bzpdc-MOFs into real-world applications - in polymeric membranes, but also beyond.

Zitieren

Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites. / Hindricks, Karen D.J.; Erdmann, Jessica; Marten, Celine et al.
in: RSC Advances, Jahrgang 13, Nr. 39, 13.09.2023, S. 27447-27455.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Hindricks, KDJ, Erdmann, J, Marten, C, Herrmann, T, Behrens, P & Schaate, A 2023, 'Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites', RSC Advances, Jg. 13, Nr. 39, S. 27447-27455. https://doi.org/10.1039/d3ra04530g
Hindricks, K. D. J., Erdmann, J., Marten, C., Herrmann, T., Behrens, P., & Schaate, A. (2023). Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites. RSC Advances, 13(39), 27447-27455. https://doi.org/10.1039/d3ra04530g
Hindricks KDJ, Erdmann J, Marten C, Herrmann T, Behrens P, Schaate A. Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites. RSC Advances. 2023 Sep 13;13(39):27447-27455. doi: 10.1039/d3ra04530g
Hindricks, Karen D.J. ; Erdmann, Jessica ; Marten, Celine et al. / Synthesis and photochemical modification of monolayer thin MOF flakes for incorporation in defect free polymer composites. in: RSC Advances. 2023 ; Jahrgang 13, Nr. 39. S. 27447-27455.
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abstract = "Metal-organic frameworks (MOFs) with benzophenone linker molecules are characterized by their ability to undergo photochemical postsynthetic modification. While this approach opens up almost unlimited possibilities for tailoring materials to specific applications, the processability of the large particles is still lacking. In this work, we present a new approach to fabricate micro flakes of the stable Zr-bzpdc-MOF (bzpdc = benzophenone-4-4′-dicarboxylate) with a thickness of only a few monolayers. The crystalline and nanoporous flakes form dispersions in acetone that are stable for months. Embedding the flakes in polymer composites was investigated as one of many possible applications. Zr-bzpdc-MOF micro flakes were decorated with poly(dimethylsiloxane) (PDMS) via a photochemical postsynthetic modification and incorporated into silicon elastomers. The PDMS functionalization allows covalent cross-linking between the MOF and the polymer while maintaining the porosity of the MOF. The resulting hybrid materials provide defect-free interfaces and show preferential adsorption of CO2 over CH4, making them attractive for gas separation or sensing applications. The work should serve as a basis for bringing bzpdc-MOFs into real-world applications - in polymeric membranes, but also beyond.",
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